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Finding the Fourth Proportional to 84,365.72, 126,548.56 and 77,325.96

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Solution

The fourth proportional to 84,365.72, 126,548.56 and 77,325.96 is: 115,988.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,365.72 : 126,548.56 = 77,325.96 : x
  2. Step 2: Convert to fraction form
    84,365.72/126,548.56 = 77,325.96/x
  3. Step 3: Cross multiply
    84,365.72x = 126,548.56 × 77,325.96
  4. Step 4: Simplify right side
    84,365.72x = 9,785,488,888.62
  5. Step 5: Solve for x
    x = 9,785,488,888.62/84,365.72
  6. Step 6: Final answer
    x = 115,988.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.